Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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Deferred Costs To Obtain Customer Contracts Narratives (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019	Jan. 03, 2020
Capitalized Contract Cost [Line Items]
Deferred costs to obtain customer contracts	$ 44.5		$ 45.4
Deferred Commission [Member]
Capitalized Contract Cost [Line Items]
Impairment loss related to deferred commissions	0.0	$ 0.0
Sales And Marketing Expense [Member]
Capitalized Contract Cost [Line Items]
Amortization expense related to deferred costs to obtain customer contracts	$ 5.5	$ 5.6